Energy-saving irrigation device for water conservancy project and irrigation method thereof

Abstract

The invention provides an energy-saving irrigation device for hydraulic engineering and an irrigation method thereof, and relates to the technical field of irrigation device.The energy-saving irrigation device comprises a column body, a water storage bin and a water filtering head, the water filtering head communicates with the upper end of the column body, the water storage bin communicates with the lower end of the column body, a plurality of leaking holes are evenly formed in the upper portion of the water filtering head, and a hollow pipe is arranged in the center of the upper end of the water filtering head; a fixed pipe slidably penetrates through the hollow pipe, the upper end of the fixed pipe penetrates through the hollow pipe and extends to the position above the water filtering head, a rotating head is rotationally arranged at the upper end of the fixed pipe in a sealed mode, extension heads are symmetrically and rotationally arranged on the two sides of the rotating head, spray heads are arranged at the ends, away from the rotating head, of the extension heads, a spray pipe is arranged in the fixed pipe, and branch pipes are arranged in the rotating head and the extension heads. Rainwater is received through the water filtering head and enters the water storage bin through the column body to be stored, the water storage bin can be separated from the column body and the external space through the arranged arc-shaped plate, and during irrigation, water in the water storage bin is lifted through the water pump and sprayed out from the spraying head to achieve irrigation.

Description

Technical Field

[0001] The invention relates to the technical field of irrigation devices, and in particular to an energy-saving irrigation device for water conservancy projects and an irrigation method thereof. Background Art

[0002] Water conservancy projects refer to various engineering projects that use engineering technology to develop, utilize, manage and protect water resources. These projects are designed to regulate and control the flow, distribution and use of water to support agriculture, industry, urban water supply, flood control and other needs. Irrigation applications in water conservancy projects mainly include water source scheduling, channel construction, pump station operation, reservoir management and the design and maintenance of drip or sprinkler irrigation systems;

[0003] For example, a garden energy-saving irrigation device of "CN213719161U" belongs to the field of garden irrigation technology, including a chassis, a fixed column, a fixed hole and a detector. The fixed column is fixedly installed on the upper end of the chassis, and a plurality of fixed holes are installed through the upper end of the chassis. A detector is fixedly installed on the upper end of the chassis, and a top plate is fixedly installed on the top of the detector. This garden energy-saving irrigation device solves the problem that the irrigation of the garden by the device cannot be controlled according to the actual dryness and wetness of the garden soil, thereby causing a large waste of resources, and excessive irrigation will wash away the nutrients in the soil, which is not conducive to the growth of plants and is not energy-efficient in actual use. In addition, this garden energy-saving irrigation device solves the problem that the range of spray irrigation is small and the irrigation area is not ideal, and the garden plants cannot be effectively irrigated, thereby increasing the installation density of the device and increasing the economic expenditure on the garden, which is conducive to actual use.

[0004] However, among the existing technologies, a series of technologies such as sprinkler irrigation, drip irrigation and pipe irrigation are currently being promoted on the market. Flooding is the main method for farmland irrigation, which wastes water resources and is inefficient. In addition, the rainfall in rainy weather usually exceeds the demand of plants, and the excess rainwater will flow directly into the nearby river. If the rainwater can be collected and utilized, the water demand for irrigation can be effectively reduced. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that excess rainwater will directly flow into a nearby river. If the rainwater can be collected and utilized, the water demand during irrigation can be effectively reduced.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an energy-saving irrigation device for water conservancy projects, comprising a column, a water storage tank and a water filter head, wherein the water filter head is connected and arranged at the upper end of the column, the water storage tank is connected and arranged at the lower end of the column, a plurality of leakage holes are evenly arranged above the water filter head, a hollow tube is arranged at the center position of the upper end of the water filter head, a fixed tube is slidably penetrated in the hollow tube, the upper end of the fixed tube passes through the hollow tube and extends to the upper end of the water filter head, a rotating head is provided at the upper end of the fixed tube for sealing and rotation, and the Extension heads are symmetrically rotated on both sides of the rotating head, a nozzle is provided at one end of the extension head away from the rotating head, a nozzle is provided inside the fixed tube, a branch pipe is provided in the rotating head and the extension head, the nozzle is sealed and connected with the nozzle through the branch pipe, a water pump is provided in the water storage tank, the output end of the water pump is connected with the lower end of the fixed tube, a protective cover is provided above the water filter head at a position on one side of the rotating head and rotated by a rotating shaft, a limiting ring is provided above the water filter head on the inner side of the protective cover, and the inner wall of the limiting ring is slidably adapted to the outer wall of the rotating head.

[0007] As a preferred embodiment, an upper plate is provided on the outer wall of the lower end of the hollow tube, and a lower plate is provided on the outer wall of the lower end of the fixed tube. A cylinder is installed between the upper plate and the lower plate. By contracting the cylinder, the lower plate is driven to move up, thereby realizing the sliding upward movement of the fixed tube in the hollow tube and the moving upward movement of the rotating head away from the water filter head to a certain height, so as to facilitate a larger spraying range.

[0008] As a preferred embodiment, assembly grooves are symmetrically provided on both sides of the rotating head, one end of the extension head is rotatably connected to the lower part of the assembly groove, and the upper part of the assembly groove is assembled and connected to the extension head through a spring. When the rotating head loses connection with the limiting ring, the spring pushes the extension head to rotate and unfold, and the extension head detaches from the assembly groove. Conversely, when the rotating head moves downward, the limiting ring squeezes the two extension heads and shrinks them to the limit position in the assembly groove.

[0009] As a preferred embodiment, a cannula is provided at the lower end of the rotating head, the lower end of the cannula is engaged and rotatably connected with the inner wall of the fixed tube, the outer wall of the nozzle is sealed and rotatably connected with the inner wall of the cannula, the upper end of the nozzle is sealed and rotatably connected with the outer wall of the lower end of the branch tube, the rotating connection between the cannula and the fixed tube allows the rotating head and the fixed tube to rotate, and the sealed rotatably connection between the cannula, the nozzle and the branch tube can ensure the sealing during rotation.

[0010] As a preferred embodiment, two branch pipes are provided and the lower ends of the two branch pipes are connected, the upper end of the branch pipe passes through the center position below the rotating head and extends into the assembly groove, and is penetrated to the corresponding side of the extension head and is sealed and connected with the built-in nozzle, the two nozzles are located above the side wall of one end of the extension head and are arranged obliquely symmetrically, and can be sealed and connected with the nozzle through the branch pipe, and the path distribution setting of the branch pipe will not affect the opening and closing of the extension head, thereby ensuring the smooth operation of the equipment.

[0011] As a preferred embodiment, a strip groove is provided on the water filter head located between the inner side of the protective cover and the limiting ring, and the lower part of the inner wall of the protective cover is rotatably connected to the side wall of the fixed tube through a connecting rod, and the lower end of the connecting rod passes through the strip groove and is rotatably connected to the fixed tube. A drainage hole is provided on the side wall of the protective cover. When the rotating head moves up, the connecting rod moves up to push the protective cover to rotate and open, and conversely, when the fixed tube moves down, the connecting rod pulls the protective cover to close, wherein the internal space of the protective cover is relatively large, and the opening and closing of the protective cover will be affected.

[0012] As a preferred embodiment, an arc-shaped plate is provided above the interior of the water storage bin, and the side walls of the arc-shaped plate are fixedly connected to the inner wall of the water storage bin, a telescopic shaft is provided at the center position above the arc-shaped plate, an inner tube is provided in the telescopic shaft, and the inner tube is a corrugated tube, the lower end of the inner tube passes through the arc-shaped plate and is connected to the output end of the water pump, the upper end of the telescopic shaft is assembled and connected to the lower end of the fixed tube, and the upper end of the inner tube is connected to the nozzle, and a plurality of drainage grooves are provided at intervals at the edge of the arc-shaped plate, and the water storage bin can be separated from the column and the external space by the arranged arc-shaped plate, and when rainwater enters, it can enter the water storage bin through the drainage groove, thereby effectively reducing the evaporation of rainwater in the water storage bin.

[0013] As a preferred embodiment, a filter is provided above the inner wall of the leakage hole, and a filter plate is provided between the inner wall of the water filter head and the outer wall of the upper plate. By providing a filter in each leakage hole, large external particles of impurities can be prevented from falling into the water filter head. The water entering the water filter head can be filtered again by the provided filter plate to achieve better results.

[0014] As a preferred embodiment, the outer wall of the upper end of the water filter head is an arc surface structure with a center convex outward, the outer wall of the lower end of the water filter head is an arc surface structure concave inward, the side of the water filter head is an arc chamfered setting, and a plurality of drainage grooves are arranged at intervals on the outer wall of the lower end of the water filter head. The drainage grooves are of different lengths, and a hydrophilic coating is arranged at the edge of the water filter head and in the drainage groove. By arranging an arc structure on the upper surface of the water filter head, it is convenient for rainwater that cannot enter the leakage hole to slide downward. When passing through the side of the water filter head, due to the setting of the hydrophilic coating, a part of the rainwater can slide along the side of the water filter head into the drainage groove below, and finally fall to the ground due to the gradual increase of water droplet particles. At this time, even if the area of ​​the water filter head is large, the ground below the water filter head can be evenly covered with rainwater or water used for irrigation.

[0015] The present invention also provides an irrigation method of an energy-saving irrigation device for a water conservancy project, comprising the following steps:

[0016] Step S1, burying the device underground in advance so that the upper part of the column and the water filter head are located above the ground, wherein the height of the column above the ground can be adjusted according to the demand for spraying height, and the external water source is connected to the top of the water storage tank through a pipeline for adding water when the water in the water storage tank is exhausted;

[0017] Step S2, in rainy weather, rainwater falls into the leakage hole above the water filter head, passes through the inside of the column and enters the water storage tank for temporary storage;

[0018] Step S3, during watering, the cylinder is contracted to drive the fixed pipe and the rotating head above to move upward. During the upward movement, the protective cover is pushed open, and the extension heads on both sides of the rotating head lose the support of the limit ring and expand outward. At this time, the rotating head is higher than the water filter head by a distance;

[0019] Step S4, driving the water pump to drive the water inlet end of the water pump to extract water in the water storage tank and move it to the nozzle, and then the water passes through the nozzle and the branch pipe and is sprayed out from the nozzle. The nozzles on the two extension heads are arranged obliquely symmetrically. When the water is sprayed out from the two nozzles, the rotating head is driven to rotate.

[0020] Step S5, after the spraying is finished, the cylinder is extended, the rotating head moves down to the inside of the limiting ring, the limiting ring squeezes the two extension heads to shrink, and the protective cover is reset and rotated to above the rotating head.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] 1. The present invention receives rainwater through a water filter head, and the rainwater enters the water storage bin through a column to be stored. The water storage bin can be separated from the column and the external space by an arc plate. When rainwater enters, it can enter the water storage bin through a drainage trough, which can effectively reduce the evaporation of rainwater in the water storage bin. During irrigation, the water in the water storage bin is lifted up by a water pump and sprayed out from a nozzle to achieve irrigation.

[0023] 2. The present invention arranges an arc structure on the upper surface of the water filter head to facilitate the rainwater that cannot enter the leakage hole to slide downward. When passing through the side of the water filter head, due to the arrangement of the hydrophilic coating, a part of the rainwater can slide along the side of the water filter head to the drainage groove below, and finally falls to the ground due to the gradual increase of water droplet particles. At this time, even if the area of ​​the water filter head is large, the ground below the water filter head can be evenly covered with rainwater or water used for irrigation.

[0024] 3. The present invention contracts the cylinder to drive the lower plate to move up, thereby realizing that the fixed pipe slides upward in the hollow pipe, and the rotating head moves up a certain height away from the water filter head, so as to facilitate a larger spraying range. When the rotating head moves up and loses connection with the limit ring, the spring pushes the extension head to rotate and unfold, and the extension head is separated from the assembly groove. The oblique symmetrical arrangement of the nozzle facilitates the rotation of the rotating head during water spraying.

[0025] 4. In the present invention, when the rotating head moves up, the connecting rod moves up to push the protective cover to rotate and open. Conversely, when the fixed tube moves down, the connecting rod pulls the protective cover to close. The internal space of the protective cover is relatively large, and the opening and closing of the protective cover will affect the opening and closing of the extension head. The protective cover is provided to facilitate basic protection of the rotating head. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of an energy-saving irrigation device for a water conservancy project and an irrigation method thereof provided by the present invention;

[0027] Figure 2 A schematic diagram of the internal structure of an energy-saving irrigation device for water conservancy projects and an irrigation method thereof provided by the present invention;

[0028] Figure 3 A schematic diagram of the assembly of a fixed pipe and a hollow pipe of an energy-saving irrigation device for a water conservancy project and an irrigation method thereof provided by the present invention;

[0029] Figure 4 A schematic diagram of the internal structure of a water filter head of an energy-saving irrigation device for a water conservancy project and an irrigation method thereof provided by the present invention;

[0030] Figure 5 The present invention provides an energy-saving irrigation device for water conservancy projects and an irrigation method thereof. Figure 4 A schematic diagram of the structure enlargement in the middle;

[0031] Figure 6 A schematic diagram of the internal structure of a rotating head of an energy-saving irrigation device for a water conservancy project and an irrigation method thereof provided by the present invention;

[0032] Figure 7A schematic diagram of the arc-shaped plate structure of an energy-saving irrigation device for water conservancy projects and an irrigation method thereof provided by the present invention.

[0033] Legend:

[0034] 1. Column; 2. Water storage tank; 3. Water filter head; 4. Leakage hole; 5. Hollow tube; 6. Fixed tube; 7. Rotating head; 8. Extension head; 9. Nozzle; 10. Nozzle; 11. Branch pipe; 12. Water pump; 13. Rotating shaft; 14. Protective cover; 15. Limiting ring; 161. Upper plate; 162. Lower plate; 163. Cylinder; 171. Assembly groove; 172. Spring; 18. Insert pipe; 191. Connecting rod; 192. Strip groove; 201. Arc plate; 202. Telescopic shaft; 203. Inner tube; 204. Drainage trough; 210. Filter plate; 211. Filter screen; 221. Drainage trough. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-7 The present invention provides a technical solution: an energy-saving irrigation device for water conservancy projects, comprising a column 1, a water storage tank 2 and a water filter head 3, the water filter head 3 is connected and arranged at the upper end of the column 1, the water storage tank 2 is connected and arranged at the lower end of the column 1, a plurality of leakage holes 4 are evenly arranged above the water filter head 3, a hollow tube 5 is arranged at the center of the upper end of the water filter head 3, a fixed tube 6 is slidably penetrated in the hollow tube 5, the upper end of the fixed tube 6 penetrates the hollow tube 5 and extends to the upper part of the water filter head 3, a rotating head 7 is provided at the upper end of the fixed tube 6 for sealing and rotation, and an extension is provided on both sides of the rotating head 7 for symmetrical rotation. Head 8, a nozzle 9 is provided at one end of the extended head 8 away from the rotating head 7, a nozzle 10 is provided inside the fixed tube 6, a branch pipe 11 is provided in the rotating head 7 and the extended head 8, the nozzle 10 is sealed and connected with the nozzle 9 through the branch pipe 11, a water pump 12 is provided in the water storage tank 2, and the output end of the water pump 12 is connected with the lower end of the fixed tube 6, a protective cover 14 is provided above the water filter head 3 at a position on one side of the rotating head 7 and is rotated by a rotating shaft 13, a limiting ring 15 is provided above the water filter head 3 inside the protective cover 14, and the inner wall of the limiting ring 15 is slidably adapted to the outer wall of the rotating head 7.

[0037] like Figure 1-7As shown, an upper plate 161 is provided on the outer wall of the lower end of the hollow tube 5, and a lower plate 162 is provided on the outer wall of the lower end of the fixed tube 6. A cylinder 163 is installed between the upper plate 161 and the lower plate 162. By contracting the cylinder 163, the lower plate 162 is driven to move upward, so that the fixed tube 6 can slide upward in the hollow tube 5, and the rotating head 7 moves up a certain height away from the water filter head 3, so as to facilitate a larger spraying range.

[0038] like Figure 1-7 As shown, assembly grooves 171 are symmetrically provided on both sides of the rotating head 7, one end of the extension head 8 is rotatably connected to the lower part of the assembly groove 171, and the upper part of the assembly groove 171 is assembled and connected to the extension head 8 through a spring 172. When the rotating head 7 loses connection with the limiting ring 15, the spring 172 pushes the extension head 8 to rotate and unfold, and the extension head 8 is separated from the assembly groove 171. Conversely, when the rotating head 7 moves downward, the limiting ring 15 squeezes the two extension heads 8 and shrinks them to the limit position in the assembly groove 171.

[0039] like Figure 1-7 As shown, a plug 18 is provided at the lower end of the rotating head 7, and the lower end of the plug 18 is engaged and rotatably connected with the inner wall of the fixed pipe 6, the outer wall of the nozzle 10 is sealed and rotatably connected with the inner wall of the plug 18, and the upper end of the nozzle 10 is sealed and rotatably connected with the outer wall of the lower end of the branch pipe 11. The rotating connection between the plug 18 and the fixed pipe 6 allows the rotating head 7 and the fixed pipe 6 to rotate, and the sealed rotatable connection between the plug 18 and the nozzle 10 and the branch pipe 11 can ensure the sealing when the nozzle 10 and the branch pipe 11 rotate.

[0040] like Figure 1-7 As shown, two branch pipes 11 are provided and the lower ends of the two branch pipes 11 are connected, the upper end of the branch pipe 11 passes through the center position below the rotating head 7 and extends into the assembly groove 171, and is penetrated to the corresponding side extension head 8 and sealedly connected with the built-in nozzle 9. The two nozzles 9 are located above the side wall of one end of the extension head 8 and are obliquely symmetrically arranged. Through the set branch pipe 11, they can be sealed and connected with the nozzle 9. The path distribution setting of the branch pipe 11 will not affect the opening and closing of the extension head 8, thereby ensuring the smooth operation of the equipment.

[0041] like Figure 1-7 As shown, a strip groove 192 is provided on the water filter head 3 located between the inner side of the protective cover 14 and the limiting ring 15. The lower part of the inner wall of the protective cover 14 is rotatably connected to the side wall of the fixed tube 6 through a connecting rod 191. The lower end of the connecting rod 191 passes through the strip groove 192 and is rotatably connected to the fixed tube 6. A drainage hole is provided on the side wall of the protective cover 14. When the rotating head 7 moves upward, the connecting rod 191 moves upward to push the protective cover 14 to rotate and open. Conversely, when the fixed tube 6 moves downward, the connecting rod 191 pulls the protective cover 14 to close. The internal space of the protective cover 14 is relatively large, and the opening and closing of the protective cover 14 will be affected.

[0042] like Figure 1-7As shown, an arc plate 201 is provided above the interior of the water storage tank 2, and the side wall of the arc plate 201 is fixedly connected to the inner wall of the water storage tank 2, and a telescopic shaft 202 is connected at the center position above the arc plate 201. An inner tube 203 is provided in the telescopic shaft 202, and the inner tube 203 is a corrugated tube. The lower end of the inner tube 203 passes through the arc plate 201 and is connected to the output end of the water pump 12. The upper end of the telescopic shaft 202 is assembled and connected to the lower end of the fixed pipe 6, and the upper end of the inner tube 203 is connected to the nozzle 10. A plurality of drainage grooves 204 are provided at intervals at the edge of the arc plate 201. The water storage tank 2 can be separated from the column 1 and the external space by the arc plate 201. When rainwater enters, it can enter the water storage tank 2 through the drainage grooves 204, which can effectively reduce the evaporation of rainwater in the water storage tank 2.

[0043] like Figure 1-7 As shown, a filter screen 211 is provided above the inner wall of the leakage hole 4, and a filter plate 210 is provided between the inner wall of the water filter head 3 and the outer wall of the upper plate 161. By providing a filter screen 211 in each leakage hole 4, large particles of external impurities can be prevented from falling into the water filter head 3. The water entering the water filter head 3 can be filtered again by the provided filter plate 210 to achieve better results.

[0044] like Figure 1-7 As shown, the outer wall of the upper end of the water filter head 3 is an arc surface structure with a protrusion outward from the center, the outer wall of the lower end of the water filter head 3 is an arc surface structure with a concave inward, the side of the water filter head 3 is an arc chamfered setting, and a plurality of drainage grooves 221 are arranged at intervals on the outer wall of the lower end of the water filter head 3. The drainage grooves 221 are of different lengths. A hydrophilic coating is arranged at the edge of the water filter head 3 and in the drainage grooves 221. By arranging an arc structure on the upper surface of the water filter head 3, it is convenient for rainwater that cannot enter the leakage hole 4 to slide downward. When passing through the side of the water filter head 3, due to the setting of the hydrophilic coating, a part of the rainwater can slide along the side of the water filter head 3 into the drainage groove 221 below, and finally fall to the ground due to the gradual increase of water droplet particles. At this time, even if the area of ​​the water filter head 3 is large, the ground below the water filter head 3 can also be evenly covered with rainwater or water used for irrigation.

[0045] Working principle:

[0046] Step S1, burying the device underground in advance so that the upper part of the column 1 and the water filter head 3 are located above the ground, wherein the height of the column 1 above the ground can be adjusted according to the demand for spraying height, and the external water source is connected to the top of the water storage tank 2 through a pipeline for adding water when the water in the water storage tank 2 is exhausted;

[0047] Step S2, in rainy weather, rainwater falls into the leakage hole 4 above the water filter head 3, passes through the inside of the column 1 and enters the water storage tank 2 for temporary storage;

[0048] Step S3, during watering, the air cylinder 163 is contracted to drive the fixed pipe 6 and the rotating head 7 above to move upward. During the upward movement, the protective cover 14 is pushed open, and the extension heads 8 on both sides of the rotating head 7 lose the support of the limit ring 15 and expand outward. At this time, the rotating head 7 is higher than the water filter head 3 by a distance;

[0049] Step S4, driving the water pump 12 to drive the water inlet end of the water pump 12 to extract water in the water storage tank 2 and move it to the nozzle 10, passing through the nozzle 10 and the branch pipe 11 and spraying out from the nozzle 9. The nozzles 9 located on the two extension heads 8 are arranged obliquely symmetrically. When water is sprayed out from the two nozzles 9, the rotating head 7 is driven to rotate.

[0050] Step S5, after the spraying is finished, the cylinder 163 is extended, the rotating head 7 moves down to the inside of the limiting ring 15, the limiting ring 15 squeezes the two extension heads 8 to shrink, and the protective cover 14 is reset and rotated to above the rotating head 7.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An energy-saving irrigation device for water conservancy projects, characterized in that: The invention comprises a column (1), a water storage tank (2) and a water filter head (3), wherein the water filter head (3) is arranged in communication with the upper end of the column (1), the water storage tank (2) is arranged in communication with the lower end of the column (1), a plurality of leakage holes (4) are evenly arranged above the water filter head (3), a hollow tube (5) is arranged at the center position of the upper end of the water filter head (3), a fixed tube (6) is slidably penetrated in the hollow tube (5), the upper end of the fixed tube (6) passes through the hollow tube (5) and extends to the upper end of the water filter head (3), a rotating head (7) is provided at the upper end of the fixed tube (6) for sealing and rotation, and extension heads (8) are symmetrically rotated on both sides of the rotating head (7), and the extension heads (8) are far away from the rotating head (7). ) is provided with a nozzle (9) at one end, a nozzle (10) is provided inside the fixed tube (6), a branch pipe (11) is provided inside the rotating head (7) and the extension head (8), the nozzle (10) is sealed and connected with the nozzle (9) through the branch pipe (11), a water pump (12) is provided in the water storage tank (2), the output end of the water pump (12) is connected with the lower end of the fixed tube (6), a protective cover (14) is provided above the water filter head (3) at a position on one side of the rotating head (7) and is rotatable by a rotating shaft (13), a limiting ring (15) is provided above the water filter head (3) on the inner side of the protective cover (14), and the inner wall of the limiting ring (15) is slidably matched with the outer wall of the rotating head (7).

2. The energy-saving irrigation device for water conservancy projects according to claim 1, characterized in that: An upper plate (161) is provided on the outer wall of the lower end of the hollow tube (5), a lower plate (162) is provided on the outer wall of the lower end of the fixed tube (6), and a cylinder (163) is installed between the upper plate (161) and the lower plate (162).

3. The energy-saving irrigation device for water conservancy projects according to claim 1, characterized in that: The rotating head (7) is symmetrically provided with assembly grooves (171) on both sides, one end of the extension head (8) is rotatably connected to the lower part of the assembly groove (171), and the upper part of the assembly groove (171) is assembled and connected to the extension head (8) via a spring (172).

4. The energy-saving irrigation device for water conservancy projects according to claim 3 is characterized in that: The lower end of the rotating head (7) is provided with a plug (18), the lower end of the plug (18) is engaged and rotatably connected with the inner wall of the fixed tube (6), the outer wall of the nozzle (10) is sealed and rotatably connected with the inner wall of the plug (18), and the upper end of the nozzle (10) is sealed and rotatably connected with the outer wall of the lower end of the branch tube (11).

5. The energy-saving irrigation device for water conservancy projects according to claim 4, characterized in that: The branch pipes (11) are provided with two and the lower ends of the two branch pipes (11) are connected, the upper ends of the branch pipes (11) pass through the central position below the rotating head (7) and extend into the assembly groove (171), and pass through the corresponding side of the extension head (8) and are sealed and connected with the built-in nozzle (9), and the two nozzles (9) are located above the side wall of one end of the extension head (8) and are obliquely symmetrically arranged.

6. The energy-saving irrigation device for water conservancy projects according to claim 1, characterized in that: A strip groove (192) is provided on the water filter head (3) located between the inner side of the protective cover (14) and the limiting ring (15); the lower part of the inner wall of the protective cover (14) is rotatably connected to the side wall of the fixed pipe (6) via a connecting rod (191); the lower end of the connecting rod (191) passes through the strip groove (192) and is rotatably connected to the fixed pipe (6); and a drainage hole is provided on the side wall of the protective cover (14).

7. The energy-saving irrigation device for water conservancy projects according to claim 1, characterized in that: An arc-shaped plate (201) is provided above the interior of the water storage bin (2); the side wall of the arc-shaped plate (201) is fixedly connected to the inner wall of the water storage bin (2); a telescopic shaft (202) is provided at the center position above the arc-shaped plate (201); an inner tube (203) is provided inside the telescopic shaft (202); the inner tube (203) is a corrugated tube; the lower end of the inner tube (203) passes through the arc-shaped plate (201) and is connected to the output end of the water pump (12); the upper end of the telescopic shaft (202) is assembled and connected to the lower end of the fixed tube (6); the upper end of the inner tube (203) is connected to the nozzle (10); and a plurality of drainage grooves (204) are provided at intervals at the edge of the arc-shaped plate (201).

8. The energy-saving irrigation device for water conservancy projects according to claim 2, characterized in that: A filter screen (211) is provided above the inner wall of the leakage hole (4), and a filter plate (210) is provided between the inner wall of the water filter head (3) and the outer wall of the upper plate (161).

9. The energy-saving irrigation device for water conservancy projects according to claim 8, characterized in that: The outer wall of the upper end of the water filter head (3) is in the form of an arc surface structure with a protrusion outward from the center, the outer wall of the lower end of the water filter head (3) is in the form of an arc surface structure with a concave inward, the side of the water filter head (3) is in the form of an arc chamfer, a plurality of drainage grooves (221) are arranged at intervals on the outer wall of the lower end of the water filter head (3), the drainage grooves (221) are of different lengths, and a hydrophilic coating is arranged at the edge of the water filter head (3) and in the drainage grooves (221).

10. An irrigation method using an energy-saving irrigation device for a water conservancy project, characterized in that: An energy-saving irrigation device for a water conservancy project according to any one of claims 1 to 9 is used, comprising the following steps: Step S1, burying the device underground in advance so that the upper part of the column (1) and the water filter head (3) are located above the ground, wherein the height of the column (1) above the ground can be adjusted according to the demand for spraying height, and an external water source is connected to the top of the water storage tank (2) through a pipeline, so as to add water when the water in the water storage tank (2) is exhausted; Step S2, in rainy weather, rainwater falls into the leakage hole (4) above the water filter head (3), passes through the inside of the column (1) and enters the water storage bin (2) for temporary storage; Step S3, during watering, the air cylinder (163) is contracted to drive the fixed pipe (6) and the rotating head (7) above to move upwards, and the protective cover (14) is pushed open during the upward movement, and the extension heads (8) on both sides of the rotating head (7) lose the support of the limit ring (15) and expand outwards, and at this time, the rotating head (7) is higher than the water filter head (3) by a certain distance; Step S4, driving the water pump (12), driving the water inlet end of the water pump (12) to draw water from the water storage tank (2) to move to the nozzle (10), pass through the nozzle (10), the branch pipe (11) and spray out from the nozzle (9), the nozzles (9) located on the two extension heads (8) are arranged obliquely symmetrically, and when the water is sprayed out from the two nozzles (9), the rotating head (7) is driven to rotate; Step S5, after the spraying is finished, the cylinder (163) is extended, the rotating head (7) moves down to the inside of the limiting ring (15), the limiting ring (15) squeezes the two extension heads (8) to shrink, and the protective cover (14) is reset and rotated to above the rotating head (7).

Images